From 2d744da68c31814ee3d5d3696aaa4d6bf5955a21 Mon Sep 17 00:00:00 2001
From: Bonta <40473493+Bonta0@users.noreply.github.com>
Date: Sun, 4 Jul 2021 13:09:46 +0200
Subject: [PATCH] Core: Add GBA host interface

---
 Source/Android/jni/MainAndroid.cpp     |  5 +++++
 Source/Core/Core/Host.h                | 18 ++++++++++++++++++
 Source/Core/DolphinNoGUI/MainNoGUI.cpp |  5 +++++
 Source/Core/DolphinQt/Host.cpp         |  5 +++++
 Source/DSPTool/StubHost.cpp            |  4 ++++
 Source/UnitTests/StubHost.cpp          |  4 ++++
 6 files changed, 41 insertions(+)

diff --git a/Source/Android/jni/MainAndroid.cpp b/Source/Android/jni/MainAndroid.cpp
index e1066f1584..765bab1bcb 100644
--- a/Source/Android/jni/MainAndroid.cpp
+++ b/Source/Android/jni/MainAndroid.cpp
@@ -173,6 +173,11 @@ void Host_TitleChanged()
   env->CallStaticVoidMethod(IDCache::GetNativeLibraryClass(), IDCache::GetOnTitleChanged());
 }
 
+std::unique_ptr<GBAHostInterface> Host_CreateGBAHost(std::weak_ptr<HW::GBA::Core> core)
+{
+  return nullptr;
+}
+
 static bool MsgAlert(const char* caption, const char* text, bool yes_no, Common::MsgType style)
 {
   // If a panic alert happens very early in the execution of a game, we can crash here with
diff --git a/Source/Core/Core/Host.h b/Source/Core/Core/Host.h
index a66e36b360..dad850a5b2 100644
--- a/Source/Core/Core/Host.h
+++ b/Source/Core/Core/Host.h
@@ -3,9 +3,12 @@
 
 #pragma once
 
+#include <memory>
 #include <string>
 #include <vector>
 
+#include "Common/CommonTypes.h"
+
 // Host - defines an interface for the emulator core to communicate back to the
 // OS-specific layer
 //
@@ -23,6 +26,19 @@
 // The host can be just a command line app that opens a window, or a full blown debugger
 // interface.
 
+namespace HW::GBA
+{
+class Core;
+}  // namespace HW::GBA
+
+class GBAHostInterface
+{
+public:
+  virtual ~GBAHostInterface() = default;
+  virtual void GameChanged() = 0;
+  virtual void FrameEnded(const std::vector<u32>& video_buffer) = 0;
+};
+
 enum class HostMessageID
 {
   // Begin at 10 in case there is already messages with wParam = 0, 1, 2 and so on
@@ -47,3 +63,5 @@ void Host_UpdateMainFrame();
 void Host_UpdateTitle(const std::string& title);
 void Host_YieldToUI();
 void Host_TitleChanged();
+
+std::unique_ptr<GBAHostInterface> Host_CreateGBAHost(std::weak_ptr<HW::GBA::Core> core);
diff --git a/Source/Core/DolphinNoGUI/MainNoGUI.cpp b/Source/Core/DolphinNoGUI/MainNoGUI.cpp
index 31ddb591bb..26b0e69a22 100644
--- a/Source/Core/DolphinNoGUI/MainNoGUI.cpp
+++ b/Source/Core/DolphinNoGUI/MainNoGUI.cpp
@@ -119,6 +119,11 @@ void Host_TitleChanged()
 #endif
 }
 
+std::unique_ptr<GBAHostInterface> Host_CreateGBAHost(std::weak_ptr<HW::GBA::Core> core)
+{
+  return nullptr;
+}
+
 static std::unique_ptr<Platform> GetPlatform(const optparse::Values& options)
 {
   std::string platform_name = static_cast<const char*>(options.get("platform"));
diff --git a/Source/Core/DolphinQt/Host.cpp b/Source/Core/DolphinQt/Host.cpp
index 29215f5bbe..61cbc7036d 100644
--- a/Source/Core/DolphinQt/Host.cpp
+++ b/Source/Core/DolphinQt/Host.cpp
@@ -229,3 +229,8 @@ void Host_TitleChanged()
     Discord::UpdateDiscordPresence();
 #endif
 }
+
+std::unique_ptr<GBAHostInterface> Host_CreateGBAHost(std::weak_ptr<HW::GBA::Core> core)
+{
+  return nullptr;
+}
diff --git a/Source/DSPTool/StubHost.cpp b/Source/DSPTool/StubHost.cpp
index c782978fc7..de20be198f 100644
--- a/Source/DSPTool/StubHost.cpp
+++ b/Source/DSPTool/StubHost.cpp
@@ -52,6 +52,10 @@ void Host_YieldToUI()
 void Host_TitleChanged()
 {
 }
+std::unique_ptr<GBAHostInterface> Host_CreateGBAHost(std::weak_ptr<HW::GBA::Core> core)
+{
+  return nullptr;
+}
 bool Host_UIBlocksControllerState()
 {
   return false;
diff --git a/Source/UnitTests/StubHost.cpp b/Source/UnitTests/StubHost.cpp
index ebb0915f31..233af18f79 100644
--- a/Source/UnitTests/StubHost.cpp
+++ b/Source/UnitTests/StubHost.cpp
@@ -56,3 +56,7 @@ void Host_YieldToUI()
 void Host_TitleChanged()
 {
 }
+std::unique_ptr<GBAHostInterface> Host_CreateGBAHost(std::weak_ptr<HW::GBA::Core> core)
+{
+  return nullptr;
+}